GHSA-w3wh-g4m9-783p

Suggest an improvement
Source
https://github.com/advisories/GHSA-w3wh-g4m9-783p
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/07/GHSA-w3wh-g4m9-783p/GHSA-w3wh-g4m9-783p.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-w3wh-g4m9-783p
Aliases
Related
Published
2025-07-14T21:40:21Z
Modified
2025-07-15T01:29:01.771986Z
Severity
  • 9.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
Summary
XWiki Rendering is vulnerable to XSS attacks through insecure XHTML syntax
Details

Impact

The XHTML syntax depended on the xdom+xml/current syntax which allows the creation of raw blocks that permit the insertion of arbitrary HTML content including JavaScript. This allows XSS attacks for users who can edit a document like their user profile (enabled by default). The attack works by setting the document's syntax to xdom+xml/current and then inserting content like

<document><p><metadata><metadata><entry><string>syntax</string><org.xwiki.rendering.syntax.Syntax><type><name>XHTML</name><id>xhtml</id><variants class="empty-list"></variants></type><version>5</version></org.xwiki.rendering.syntax.Syntax></entry></metadata></metadata></p><rawtext syntax="html/5.0" content="&lt;script&gt;alert(1);&lt;/script&gt;"></rawtext></document>

This has been fixed by removing the dependency on the xdom+xml/current syntax from the XHTML syntax. Note that the xdom+xml syntax is still vulnerable to this attack. As it's main purpose is testing and its use is quite difficult, this syntax shouldn't be installed or used on a regular wiki. We're currently not aware of any further dependencies on it.

Patches

The fix of removing the dependency has been included in XWiki 14.10. It is not released for earlier versions due to the potential breakages, among others this change makes it necessary to update the Confluence XHTML syntax as it relies on internals that were changed for the fix. Similar XSS fixes were also not applied to the LTS version 13.10.x due to the potential breakages.

Workarounds

There are no known workarounds apart from upgrading.

References

  • https://jira.xwiki.org/browse/XRENDERING-660
  • https://github.com/xwiki/xwiki-rendering/commit/a4ca31f99f524b9456c64150d6f375984aa81ea7

For more information

If you have any questions or comments about this advisory: * Open an issue in Jira XWiki.org * Email us at Security Mailing List

Database specific 
{
    "github_reviewed": true,
    "severity": "CRITICAL",
    "github_reviewed_at": "2025-07-14T21:40:21Z",
    "cwe_ids": [
        "CWE-79",
        "CWE-80"
    ],
    "nvd_published_at": "2025-07-14T23:15:25Z"
}
References

Affected packages

Maven / org.xwiki.rendering:xwiki-rendering-syntax-xhtml

Package

Name
org.xwiki.rendering:xwiki-rendering-syntax-xhtml
View open source insights on deps.dev
Purl
pkg:maven/org.xwiki.rendering/xwiki-rendering-syntax-xhtml

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.4.5
Fixed
14.10

Affected versions

5.*

5.4.5
5.4.6
5.4.7

6.*

6.0-milestone-1
6.0-milestone-2
6.0-rc-1
6.0
6.0.1
6.1-milestone-1
6.1-milestone-2
6.1-rc-1
6.1
6.2-milestone-1
6.2-milestone-2
6.2-rc-1
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.7
6.3-milestone-1
6.3-milestone-2
6.3-rc-1
6.3
6.4-milestone-1
6.4-milestone-2
6.4-milestone-3
6.4-rc-1
6.4
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
6.4.6
6.4.7
6.4.8

7.*

7.0-milestone-1
7.0-milestone-2
7.0-rc-1
7.0
7.0.1
7.1-milestone-1
7.1-milestone-2
7.1-rc-1
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.2-milestone-1
7.2-milestone-2
7.2-milestone-3
7.2-rc-1
7.2
7.3-milestone-1
7.3-rc-1
7.3
7.4-milestone-1
7.4-milestone-2
7.4-rc-1
7.4
7.4.1
7.4.2
7.4.4
7.4.5
7.4.6

8.*

8.0-milestone-1
8.0-milestone-2
8.0-rc-1
8.0
8.1-milestone-1
8.1-milestone-2
8.1-rc-1
8.1
8.2-milestone-1
8.2-milestone-2
8.2-rc-1
8.2
8.2.1
8.2.2
8.3-milestone-2
8.3-rc-1
8.3
8.4-rc-1
8.4
8.4.1
8.4.2
8.4.3
8.4.4
8.4.5
8.4.6

9.*

9.0-rc-1
9.0
9.1-rc-1
9.1
9.1.1
9.1.2
9.2-rc-1
9.2
9.3-rc-1
9.3
9.3.1
9.4-rc-1
9.4
9.5-rc-1
9.5
9.5.1
9.6-rc-1
9.6
9.7-rc-1
9.7
9.8-rc-1
9.8
9.8.1
9.9-rc-2
9.9
9.10-rc-1
9.10
9.10.1
9.11-rc-1
9.11
9.11.1
9.11.2
9.11.3
9.11.4
9.11.5
9.11.6
9.11.7
9.11.8
9.11.9

10.*

10.0
10.1-rc-1
10.1
10.2
10.3
10.4-rc-1
10.4
10.5-rc-1
10.5
10.6-rc-1
10.6
10.6.1
10.7-rc-1
10.7
10.7.1
10.8-rc-1
10.8
10.8.1
10.8.2
10.8.3
10.9
10.10-rc-1
10.10
10.11-rc-1
10.11
10.11.1
10.11.2
10.11.3
10.11.4
10.11.5
10.11.6
10.11.7
10.11.8
10.11.9
10.11.10
10.11.11

11.*

11.0
11.0.1
11.0.2
11.0.3
11.1-rc-1
11.1
11.2-rc-1
11.2
11.3-rc-1
11.3
11.3.1
11.3.2
11.3.3
11.3.4
11.3.5
11.3.6
11.3.7
11.4-rc-1
11.4
11.5-rc-1
11.5
11.6-rc-1
11.6
11.6.1
11.7-rc-1
11.7
11.8-rc-1
11.8
11.8.1
11.9
11.10
11.10.1
11.10.2
11.10.3
11.10.4
11.10.5
11.10.6
11.10.7
11.10.8
11.10.10
11.10.11
11.10.12
11.10.13

12.*

12.0-rc-1
12.0
12.1-rc-1
12.1
12.2
12.2.1
12.3-rc-1
12.3
12.4-rc-1
12.4
12.5-rc-1
12.5
12.5.1
12.6
12.6.1
12.6.2
12.6.3
12.6.4
12.6.5
12.6.6
12.6.7
12.6.8
12.7-rc-1
12.7
12.7.1
12.8-rc-1
12.8
12.9-rc-1
12.9
12.10
12.10.1
12.10.2
12.10.3
12.10.4
12.10.5
12.10.6
12.10.7
12.10.8
12.10.9
12.10.10
12.10.11

13.*

13.0
13.1-rc-1
13.1
13.2-rc-1
13.2
13.3-rc-1
13.3
13.4-rc-1
13.4
13.4.1
13.4.2
13.4.3
13.4.4
13.4.5
13.4.6
13.4.7
13.5-rc-1
13.5
13.6-rc-1
13.6
13.7-rc-1
13.7
13.8-rc-1
13.8
13.9-rc-1
13.9
13.10-rc-1
13.10
13.10.1
13.10.2
13.10.3
13.10.4
13.10.5
13.10.6
13.10.7
13.10.8
13.10.9
13.10.10
13.10.11

14.*

14.0-rc-1
14.0
14.1-rc-1
14.1
14.2-rc-1
14.2
14.2.1
14.3-rc-1
14.3
14.3.1
14.4-rc-1
14.4
14.4.1
14.4.2
14.4.3
14.4.4
14.4.5
14.4.6
14.4.7
14.4.8
14.5
14.6-rc-1
14.6
14.7-rc-1
14.7
14.8-rc-1
14.8
14.9-rc-1
14.9